Each year the Air Quality Research Center delivers nearly one million new measurement values for the IMPROVE network. A large community of researchers and analysts use these data to address a wide range of scientific and regulatory issues. All data pass through multiple layers of review and quality assurance before publication, but all carry some uncertainty from the irreducible error that is present in any measurement. An ongoing program of research works to:
- characterize various dimensions of this uncertainty;
- supply clear guidance on the strengths and limitations of IMPROVE data in the diverse analyses to which they are subjected;
- identify the sources of uncertainty in the measurement process, and
- reduce the uncertainty in the measurement through new quality assurance measures.
Contact—Nicole Hyslop (530-754-8979) and Warren White (530-752-1213)
Miscellaneous on-line advisories on specific data issues are collected at http://vista.cira.colostate.edu/improve/Data/QA_QC/Advisory.htm